The control knob sits on one of the spindles located on the front of the control panel and allows you to manually control certain aspects of the boilers operation. Some boilers enable you to change temperature and some even allow you to change the current function. This means the user can have the boiler generate hot water without the central heating being on and vice versa .
Colour: Black
Fits a Number of Potterton Appliances
Technical specification
Waist Sizeac69cb38gwToilet Cistern CapacityFTW--Supplier Part Number238172